After careful consideration, state Sen. Rebekah Warren, D-Ann Arbor, says she will not be running for U.S. Congress this year.

Warren announced her decision on Friday, saying her heart is in Lansing right now and she'll be seeking re-election to a second term in the Michigan Senate.

Debbie Dingell on the steps of the Grand Hotel on Mackinac Island in 2012.Ryan Stanton | The Ann Arbor News

That means she will not challenge fellow Democrat Debbie Dingell in the August primary. Dingell is seeking the 12th congressional district seat now held by her husband, retiring U.S. Rep. John Dingell, D-Dearborn.

In a post on her Facebook page, Warren thanked those who encouraged her to run for Congress, saying she's humbled by the support she had.

"I have decided, however, not to do it, and to run instead for my second term in the Michigan Senate," she said. "My heart is in Lansing right now, and I believe I can do the most good working for Michigan, in Michigan."

Warren said there's still unfinished work in the state Capitol, and she is just not ready to let it go.

"Thank you for your passion and your faith," she wrote to her supporters. "Thank you for wanting to fight for a new Michigan future. Please don't let that energy go, we've still got a lot of work to do!"

Republican Terry Bowman of Ypsilanti entered the 12th congressional district race this week. Bowman is a 17-year worker in an auto plant.Courtesy Photo

Warren was elected to the Michigan Senate in 2010 after serving four years in the state House.

Republican Terry Bowman of Ypsilanti entered the 12th congressional district race this week. Bowman, a 17-year worker in an auto plant, says it's time for change and Congress doesn't need another Washington insider who caters to special interests.

Bowman works for the Ford Motor Co. in the sequencing department at the Rawsonville plant.

Debbie Dingell, a member of the Democratic National Committee for years, has been closely involved in her husband's work in Congress over the years and the two are considered one of Washington's most powerful political couples.

She is a member of the Wayne State University Board of Governors and has held high-level positions with General Motors.

State Rep. Jeff Irwin, D-Ann Arbor, was expected to seek Warren's seat in the state Senate if Warren ran for Congress. It's now expected Irwin will seek re-election to his state House seat, which likely means Washtenaw County Board Chairman Yousef Rabhi, D-Ann Arbor, won't be making a run for Irwin's seat now.